Problems of statistical analysis of rating scale scores in clinical studies.
Conventional statistical analysis of rating scale scores in clinical studies are inefficient and may occasionally lead to erroneous conclusions. Analytical methods based on a mixture of distributions is proposed and illustrated with a computational example. Though the model is complex the analysis can be carried out easily using commonly available computer software packages.
Raman
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Department of Epidemiology & Community Medicine, University of Ottawa, Ontario, Canada.
Raman
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D005500:Follow-Up Studies; D006801:Humans; D001523:Mental Disorders / Q000523:psychology / Q000628:therapy*; D008962:Models, Theoretical; D010556:Personality Tests / Q000706:statistics & numerical data*; D011569:Psychiatric Status Rating Scales / Q000706:statistics & numerical data*; D012984:Software